Controller.



K. A. SIMMON & A. J. HALL.

CONTROLLER.

APPLICATION FILED APR. 4. 1914.

1 ,267 ,9 1 9 I Patented May 28, 1918.

NVENTORS 2 ATTORNEY UNITED KARL A. SmMON AN'D ARTHUR J. HALL, OF WILKINSBUBG, PENNSYLVANIA ASSIG-N- OBS '10 WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, .A'COBPORA- TION or PENNSYLVANIA.

CONTROLLER.

Patented May 28, 1918.

' Application filed April 4, 1914. Serial No. 829,421.

To all whom it may concern:

. Be it known that'we, KARL A. SIMMON, a citizen of the United States, and a resident of Wilkinsbur in the county and State of ennsylvania, and ARTHUR HALL, a subject of the King of'Great Britain, and a resident of Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Controllers, of which the following is a specification.

Our invention relates to controllers for governing the operation of dynamo-electric machines, and it has for its object to provide :a device of the above-indicated character which shall be simple, inexpensive and compact in construction, and which shall embody means for interlocking a plurality of operating drums with a single drum, whereby the plurality of drums are preventedfrom movement until the single drum 'occu-, pies a predetermined position and whereby.

the single drum is restrained against-further movement until the remaining drums occupy their initial positions.

In the accompanying drawing, Figure 1 is a plan view of a controller constructed in accordance with our invention, Fig.2 is a View, partially in section and partially in side elevation, of a portion of theapparatu's shown in Fig. 1; Figs. 3 and 4 are, respectively, a plan view, and a view partially in.

section and partially in side elevation, of a portion of our controller, and Fig. 5 ,is a view, partially in plan and partially in section, of a portion of the interlocking mechanism of our controller.

Referring to the drawing, the apparatus shown comprises a casing 1, a plurality of operating drums 2 and 3, a reverser drum 4,

a plurality of handles 5, 6 and 7, an intermechanism 8 and an accentuating of Allegheny thereof will be given.

thereto, preferably by screws 18 or other suitable means.

The operating drum 2 is of like construction and is rigidly mounted upon a shaft 20 to which the handle 5 is attached.

The reverser drum 4 differs from drums 2 and 3 only in that it is supported'by a single STATES PATENT OFFICE.

arm 13, and said arnf is loosely mounted upon the shaft 12 and rests upon a collar 21 which is pinned to said shaft. Moreover,

.the arm 13 embodies an integral upwardly projecting portion 22 which is adapted to recelve the reverser handle 7, and also em' bodies a plurality of lugs 23 between which a roller 24 is pivotally mounted. A second collar 26 is rigidly secured to the shaft 12 above the arm 13, and said collar has a circumferential recess 27 fora purpose to' be hereinafter set forth. The several drums 2,

3 and 4 are adapted to cooperate respectively with a plurality of sets of contact fingers 28, 29 and 30, which are suitably mounted upon supporting blocks 31 and 32, preferably of insulating material.

The handles 5 and 6 are of like construction, and each is secured to its respective shaft and embodies a suitable locking mechanism 34 which cooperates with a notched plate- 35 for definitely locking the handle in its various operating positions. Since the specific construction of the handles and the locking mechanism pertains only indirectly to our present invention, no description The accentuating notched segment'38 which is pinned to the shaft. 20 and is provided with an opening device 9 comprises a- 38 in the periphery of itshub portion, for a purpose to be set forth. Cooperating with the notched segment 38, is a spring-actuated pawl 39, having a roller-40 for engaging the several notches 41 of'the member 38, whereby the position of the operating drum 2 is accentuated. I

The interlocked mechanism 8 comprises a-stud 44 and embo ies a p urality of arms 45, 46 and 47. The arm 47 is adapted tocooperatively engage the roller 24 and is provided with a plurality of notches 48 for receiving the roller 24, when the reverser drum 4 occupies either of its operative positions. The ends of the arms 45 and 46 are respectively disposed in the notches 38' and 27 of. the notched segmenf'38 and the collar 26, when all of the drums 2, 3 and 4: occupy their ed or initial positions, A. spring l9 is rovided for actuating the pawl d3, when re eased, w

Assuming the various parts to occupy the positions shown, both the operating drums 2 and 3'are locked into position and cannot be moved until the reverser drum 4: is moved to one of its operating positions. Assuming that the actuation of the reverser drum 4 has been efiected, the roller 24 moves into the one orthe other of the notches 48 of the pawl, 43, thereby permitting the spring 49 to withdraw the arms and 46 of the pawl 43 from the notches 38 and 27. Thus, the operating drums 2 and 3 are released, and either or both drums may be moved to any position by suitable manipulation of their respective handles 5 and 6.

The ends of the arms 45 and 46 then respectively engage the peripheries or the notched segment 38 and the collar 26, whereby-further movement of the reverser drum 4 is prevented until both of the operating drums 2 and 3 are returned to their initial positions, after which, the reverser drum may be actuated to its oil or to its other operating position. 1

We do not wish to be restricted to the specific structural details and arrangement and location of parts set forth, and desire that only such limitations shall be'imjposed as are indicated in the appended claims.

We claim as our inventlonz 1. In a controller, the combination with a plurality of co-axially disposed. control drums, another control drum in side-by-side relation thereto, and a plurality of operating handles respectively associated with said control drums, of means embodying a single locking member operatively associated with said drums for mutually interlocking all of said drums,

2. In a controller, the combination with a plurality of co-axially disposed control drums, another control drum in side-by-side relation thereto, and a plurality of operating handles respectively associated with said control drums, of a single pivotally mounted 1. locln'ng member having a plurality of integral arms operatively associated with the respective control drums for interlocking said drums against improper movements.

3. In a controller, the combination with a plurality of co-axially disposed rotatable drums, and an auxiliary drum in side-by- 7 side relation thereto, of a single locking member operatively associated with said drums for interlocln'ng all of the same.

i. In a controller, the combination with a plurality of rotatable druma'and an auxiliary drum in side-by-side relation thereto, -of a single pivotally-monnted member operatively associated with said drums for mutually interlocking all of the same.

5. In acontroller, the combination with a plurality of rotatable control drums, and an auxiliary drum in side by side relation thereto, of a single pivotally-mounted locking member having arms operatively asso- Witnesses: I i I v G. R. Gwl'm', I B. Hmns. 

